Means for holding demountable rims on wheels.



R. McKAY. MEANS FOR HOLDING DEMOUNTABLE [HMS ON WHEELS.

APPLICATION HLED ILINE13, 1916.

Patented June 5, 1917.

$TEWABT- E. MCKAY, OF CLEVELAND, OHIO, ASSIG-NOR TO THE MoKAY COMPANY, OF

CLEVELAND, OHIO, A CORPORATION OF OHIO.

eas es.

Specification of Letters Patent.

' Patented June 5, 1917.

Application filed June 13, 1916. Serial No. 103,408. V

To aliwlwm may concern Be it known that I, STEWART R. MoKAY,

v a citizen of the United States, residing at Cleveland, in the county of Cuyaho'ga and State of Ohio, have invented a certain new and useful Improvement in Means for Holding Demountable Rims on Wheels, of which the following is a full, clear, and exact description.

The object of this invention is to provide effective means for clamping a demountable rim upon a wheel which do not impart to the rim any movement radially away from the center of the wheel, but which will prevent any movement of the clamping device rt. dially toward the axis of the wheel while they are exerting clamping pressure on the lllll- Theinvention consists in the construction and combination of parts shown in the drawings and hereinafter described and pointed out definitely in the appended claims.

In the drawingsFigure 1 is an outside view of part of a wheel felly and rim secured thereon by means which constitute the present invention; Fig. 2 is a transverse sectional view on the plane of line 22 on Fig. 1 showing one of the clamping devices in operative position performing the functions for which it is provided; Fig. 3 is a similar section but it shows the clamping devices in inoperative position which perthe felly band, w1l move laterally only and mits the removal of the rim from the wheel; Fig. 41 is a erspective view of one of the clamps which forms a part of this invention, and Fig. 5 is a perspective View of the plate 30,

Referring to the parts by reference characters, 10 represents an ordinary wheel felly,

and 12 a metal felly band fixed thereon and provided at its inner side with an outwardly extended substantially conical abutment'13. The rim 15 may be split or unsplit, and may have a suitably shaped tireholding channel in its outer periphery depending upon the kind of tire with which it is to be used.

The internal diameter of the rim should be, about of an inch more or less greater than the external diameter of the felly band so that the rim may be easily slipped over the folly band on the outer side thereof, and

then moved laterally over against the conical abutment 13. This conical abutment will cause the rim to become accurately centeredwith respect to the wheel, and will also serve to limit the lateral movement of the rim toward the inner side of the wheel, and will therefore serve as the thing against which the rim will be clamped by the clamping devices now to be explained.

There will be a plurality of such clamping devices employed, preferably about six in a. wheel of medium size. These clamping devices include a bolt 20 which passes through the felly and projects beyond the outer face thereof; a nut 21 which screws onto the bolt, and the clamp 22. The clamp has a jaw portion 22 which, when the clamp is in the operative position as shown in Fig. 2, may be forced against the side of the rim; a'shank portion'22 in which there is a radially elongated hole 22; and a strain-resisting lug 22 which, when the clamp is in operative position extends between the felly band and the rim and into contact with the former. It is, however, of such thickness that when it contacts with the folly band it The: clamp is shown in operative position i in Fig. 2. When the. clamp is in this position and the nut is screwed on, the clamp,

guided by the en agement of the lug with come to press laterally against the side of .the rim, whereby the rim will be firmly clamped between the jaw portion of said clamp and the conical abutment 13. Care must be taken to avoid imparting to the clamp on the rim any characteristics of construction through which the lateral pressure of the jaw against the rim-will impart to the rim any tendency to move away from the axis of the wheel because such movement will stretch the rim and tend to permanently distort it. The clamp may be made to press against the rim with enough force to insure that the rim shall not move relatively to the clamp. In use, the strains to which the rim will be subjected will tend to move it toward the axis of the wheel. Such movement, however, is prevented by the engagement of the lug 22 with the felly band. As shown, a part of the clamp lies close to the inner periphery of the rim. If, therefore,

the rim should slip in the clamp, it could 116 to cause the clamp to move only move radially inward the very short distance between the rim and the adjacent part of the clamp.

When it is desired toremove a rim the clamps are one by one moved to the inoperative position shown on Fig. 3. The ra-- sition shown-and may. be clamped in this lateral movement position by the nut. I

As an additional advantageous characteristic of each of the clamping devices shown, there is a plate 30. This is fixed to the telly inside of the clamp so that the bolt passes through it. It is formed at its edges with two outwardly extended parallel radial lie close to opposite sides ing on the bolt and is compelled to move radially as it moves away from the operative position shown in Fig. 2 and toward the inoperative position shown in Fig. 3. As the clamp moves in this direction lug 22 passes between these flanges.

Having described my invention, I claim:

1. The combination of a wheel, a demountable rim therefor, means carried by the wheel which engage said rim and limit its d1rect1on,,and a plurality of clamping devices,-each comprising a bolt which projects laterally from the outer side of the wheel, a nut thereon, v

far enough 7 therim whereby with the rim and having a shankinwlfncb,

there is a radially elongated hoie th on r I? which the bolt passes and having an ihte gral strain-resisting the periphery of the wheel ment therewith,-the thickness being less than the distance outer periphery of the Wheel and the inner periphery of the rim of contact with the rim when it is in contact with the periphery of the wheel.

2. The combination of a wheel, a demountable rim therefor, means carried by the wheel which engage said rim and limit its lateral movement in one direction, and a plurality of clamping; devices each comprising a bolt which projects laterally from the outer side of the wheel, a nut thereon, a clamp having a jaw for engagement wit and into engageof said lug between the,

whereby said lug is out lug which extends over.

the rim and having a shank in which thereis a radially elongated holethrough which the bolt passes and having an integral strain resisting lug which extends over the periphery of the wheel and into engagement therewith,-the thickness of said lug being less than the distance between the outer periphery of the wheel and the inner periphery of said lug is out of contact with the rim when it is in contact with the periphery of the wheel and a plate fixed to the side of the wheel behind the clamp,- which plate is provided with outwardly extended radial flanges which are outside of but close to the sides of said clamp.

In testimony whereof, I hereunto affix my signature in the presence of two Witnesses.

STEWART R. MoKAY.

l/Vitnesses:

E. L. Ti-irrns'ron, L. I. PORTER. 

